Lubricator.



N0.'789,101. PATENTED MAY 2, 1905.

J. MGQUEAD. LUBRICATOR.

APPLICATION FILED $21 121, 1904.

WITNESSES:

ATTORNEYS UNITED STATES Patented May 2, 1905.

JOSEPH MOQUEAD, OF HUNT, ILLINOIS.v

LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 789,101, dated May 2, 1905.

Application filed September 1, 1904. Serial No. 222,979.

To all whom it may concern.-

Be it known that I, JOSEPH MCQUEAD, a citizen of the United States, and a resident of Hunt, in the county of Jasper and State of Illinois, have invented a new and Improved Lubricator, of which the following is a full, clear, and exact description.

My invention relates to lubricators, and more particularly to those adapted for use in connection with the journalboxes of cars. Its principal objects are to provide such a device Which will deliver the lubricant in substantially definite quantities when the car is in motion and will stop this supply when it is at rest.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a central vertical section through a journal-box with one embodiment of my invention applied thereto. Fig. 2 is an end elevation thereof, and Fig. 3 is a broken sectional detail of one of'the valves.

designates a journal-box, in which operates an axle 11 and from which to the companion box projects a truss-bar 12. Upon the top of the box is supported a reservoir 13 for the lubricant, which maybe of rectangular form and be supported upon legs 14, having feet bolted to the box. From the bottom of the reservoir open pipes or conduits 15,which lead through the top of the box to the axle and are here shown as three in number, they being so distributed as to give the best lubricating effect. Each of the pipes preferably projects above the bottom of the reservoir at 16, the upper end of this portion serving as a seat for a valve,which may have a head or disk 17 coacting with such seat and a stem 18 situated within the pipe and serving to prevent lateral movement. This stem is here shown as channeled to permit free flow by it. Fixed to the bottom of the reservoir about each valve is a collar 19, which may be externally threaded and closed by a screw-cap 20. Through the side of each collar below the cap is a somewhat contracted opening 21, through which the lubricant may pass,

0 but with sufliciently-diminished pressure, so

that it does not interfere with the raising of the valve in operation.

The top of the reservoir may be closed by a cover 22, which, as illustrated, has a flange extending within the reservoir-walls and is secured in place by opposite spring-catches 23, riveted upon the reservoir and having angular ends projecting over the cover. Through the cover extends a tube 24, lying upon both sides thereof and having its upper or outer end threaded to receive a cap or closure 25. The inward projection guards the opening and prevents the splashing of oil when the reservoir is partially full from forcing its way under the cap. Depending from the under side of the cover is shown a second tube 26, and through said cover in the axis of the tube is an opening 27, through which passes a gage-rod 28. Upon the lower end of this rod is mounted a float 29, while at the opposite end above the cover is a head or enlargement 30. When the reservoir is practically empty, this head will be in proximity to the cover, its contact therewith preventing complete disengagement. If, on the other hand, the reservoir is nearly full, the

rod will project for substantially its entire length above the cover, it being seen that it will at all times indicate the depth of the contents. The size of the opening 27 is preferably such that while it will not permit the passage of the head it will still allow the entrance of a sufficient quantity of air to provide for the free passage of the lubricant through the pipes when. the valves are raised.

All the parts of the device are preferably of metal, the valves being conveniently made of brass, which prevents rusting to the seats and has a comparatively small coeflicient of expansion, so that it is not liable to stick. The float may be of sheet-aluminium or the like.

The reservoir being supplied with lubricant, when the box is at rest the heads of the valve will contact with their seats and close the opening, so that no fluid will pass, no inclination encountered in practice being sufiicient to displace them; but when the car is in motion a jar will raise these valves sufficiently V to permit a flow through the pipes, they all supplying, say, fifteen drops to the mile or any other desired quantity. It .will be seen that this arrangement permits the objectionable packing which is Commonly used within the boxes to be entirely dispensed with. The position of the head of the gage-rod will at once indicate to the oilers the amount of lubricant within the reservoir, so that the cover need not be removed unless a fresh supply is to be added.

Having thus described my invention, I claim as new and desire to secure by Letters Patent A lubricator comprising areservoir, a conduit extending outwardly from the bottom W. A. KNILLEY, H. F. DIoKY. 

